Sewing machinery.



PATEN'i'ED SEPT. i, 1908;

0. J. 'PKLSSON. SEWING MACHINERY. APPLICATION III BD JAN.25, 1907.

8 SHEETS-SHEET 1.

I n ventor Witness w No. 897,553. 'PATENTED ,SEPT. 1,- 1908.

c; J. PiLssoN. SEWING MAOHINERY.

APPLIOATIOI IILED' JAN. 25, 1907.

8 SHEETS-SHEET 2.

" In ventol WWW Fw .No. 897,553. PATENTED SEPT. ,1, 190 c. J, PLLSSON.SEWING MACHINERY. APPLICATION FILED JAN. 26, 1907.

B SHEETS-SHEET 3- 12 wwwom 0 9 l 1 P E S D E T N E T N 0 S S L A P L C 51 7 9 8 m N SEWING MACHINERY.

APPLICATION FILED mas, 1907.

8 SHEETS-SHEET 4.

In M nior Witnesses PATENTED SEPT. 1, 1908. L'PALSSON.

SEWING MACHINERY.

APPLICATION FILED JAILZB, 1907.

s SHEETSSHEET-5.

Inventor 0 431411 -W 1'tne.ssc6

a anus-surf a.

PATENTED SEPT. l, 1908.

' [nvehtor N 0 S s. L A P u C SEWING MACHINERY A PPLIOATIOH FILED IA].26, 1901.

No. 897,553. PATENTED SEPT. 1, 1908.

I c. J. PliLsso SEWING MACHINERY.

APPLICATION FILED JAHJ25, 1907 v -Jl 77 ,1 r 11.3

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4" {fir 3 7/ 7:3 101 K :f 95" J3 I: 102 F- minim J m f 0. J. PALSS'ON.SEWING MACHINERY.

APPLICATION FILED JAN. 25, 1907. U

8 SHEETS-SHEET 8 wjjnewzs Ind/enter PiiiiBNTBD SEPT. 1, 1908f UNITEDPATENT OFFICE.

CARL JOHAN PALSSQN, OF CHRISTIANIA, NORWAY, ASSIGNOR TO CARL GUNNARANDERSON,

OF GGTTENBORG, SWEDEN.

SEWING MACHINERY.

Specification of Letters Patent. Application filed January 25, 1907.Serial No. 353,984.

Patented Sept. 1, 1908.

To all whoin. it may conrer-n:

Be it known that l, am. Jo n.'\N PJiLssoN, a subjectof the King ol-Sweden, and resident of (hristiania, Norway, have invented new anduseful lm irovcments in Sewing M achinery, of whic 1 the following is aspecification, reference being had to the drawings ac- '.-ompanying andforming a part hereof.

This invention relates to n'nprovements in sewing m achinery.

The object of the invention is to provide a machine for stitching buttonholes or for plain stitching, as may be desired.

In carrying out my invention 1 make use of a machine having a stationarywork-hold ing clam a stitching frame movable in relation to the table,means for moving the said stitching frame in such a manner as to causethe needle to move along the outline of a button-hole, and means forimparting to the needle-bar a lateral vibration adapted for sidestitching. Such machines are before known but they are all adapted onlyfor stitching button-holes and cannot be used for lain-stitching.

' 10 present in vent-ion consists, chiefly, in so arranging the frame-ocratin means and the means for vibrating t re need lmbarlaterally thatthey can be readily thrown out of operation, and, further, in making theworkholding clamp easily (.letachable, the machine being, moreover,provided with means for feeding the work as in usual plain-stitchingmachines, so as to be easily convertible for plain-stitching, or forbutton-hole stitching, as may be desired.

The invention, further, consists in a novel arrangement of the movablestitching frame. As before stated, movable stitching frames are beforeknown, but such frames were hitherto journaled in a. horizontallyswinging crane or bracket inv such a manner as to be able to swing abouta vertical axis therein. In such an arrangement it is of importance "tomost accurately balance the frame, and

even in such case oblique Eres'sures cannot always be avoided by whicthe pivots etc. will be irregularly worn neces'sitatmg adjustment and reair. Accordin to this invention, these rawbacks are 0 viated by thewhole stitching frame being slidably su ported on the table so as to becarried irectl by the latter. By this means a practical y sulficientstability is obtained which 5'5 has hitherto not. been possible toobtain.

machine is to be used for plain stitching.

Fig. 2 is a side view of the mechanism foro erating the stitching frameand of the wori; holding clam and cutting device, the outlines of theirame and of the table being shown by dotted lines. Fig. 3 is a planviewof the same. Fig. 4'is a bottom plan-view of theopcrating mechanism.Fig. 5 is a rear view of the operating mechanism. Fig. (S is a detailview of a cam-grooved disk serving to impart to the frame the aforesaid.motion causing the needle-bar to describe a .movement corresponding tothe outline of the buttonhole. Fig. 7 is a detail view of the mechan ismfor rotating the said cam-grooved disk. Fig. 8 is a rear view of theIIIGGl'HtII'lSIIlfOI throwing the machine out of operation. Fig. 9 is aside view of the said'latter mechanism. Fig. 10 is a side-view of thetable and the stitching frame, parts thereof being removed in orderto-show the operating mechanism and the connections between'the saidmechanism and the stitching arts. Fig. 11 is a front view of thestitclnng frame, the fore protecting-plate being removed so as touncover the stitchingparts inclosed within the head o'l' the stitchingframe. Figs. 12 and 13 are cross-sectional views of the up er part ofthe hollow standard of the frame sl iowing the upper part of the leveractuating the rocking shaft of the machine and the means for throwingsaid lever into operative position (Fig. 1.3) or out of such position(Fig. 12).

Referring to the drawings, the frame 1 of the machine is slidablymountedon the table 2, the movement of the said frame being controlledby a mechanism secured to the underside of' the table, while the rearend of the frame is guided by a tongue or tailpiece 3 (Figs. 1 and .10)extending backward and provided with a slot 4 engaging a pivot 5 securedto the table.

In the embodiment illustrated, the mech-;.

longitudinal moven'ients t0 the frame 1 corresponding to the sides ofthe buttonhole, the said disk 6 is, on the under side, provided with acam-groove 9, Fig. 4, which engages a pin 10, Fig. 5, attached to theend of an arm 11 iulcrumed on a pivot 12 fixed to the plate 8. The saidarm 1] is rigidly fixed to the bottolncnd of a hub or sleeve 13 (Fig. tothe upper end. of which. is ri idly hired another arm 14. The end. of tio latter has a pin 15, Figs. 3 and 4, which enga es a slot 16 ormed invplate 17 secured to the "frame 1 with screws 18 (Fig. 5). The pin ismounted on a separate part 1.) which is secured to the arm 14 by meansof a screw 20 engaging a slot 21 in the said arm 14 so as to allow ofadjustment of the operatinqlengtb of the arm. 1 1 for different lengthso? huttonholes to be stitched.

In order to perform the transverse movement of the-frame 1 so as toshift the stitchin r needle from the one side of the button.- ho e tothe other, after the former has been finished, the said disk 6 is, onthe to side, provided with annthercain-grom'e ig. 6) which engages a pin23 (Figs. 3, 4, and 5} attached to an arm 24 rigidly fixed to a sleeve,or hub, which is mounted on a pivot 26 secured to the base plate 8, thesaid hub being. provided with'an arm 27 having a pin. 28 en gaging aslot 29 in the aforesaid plate 17. For the adjustment of the transversemovcment of the frame 1. the pin 28 is mounted on a separate part 30secured to the arm 27 by means of a screw 31 inserted through a slot 32in the said. arm. The earn-groove 22 (Fig.

6) is composed of two semicircular parts and 3.4 corresponding to themovements of v the needle, along the sides of the buttonhole,

and of two parts 35 connecting the said semicircular parts and reducingthe movements of the needle at t 1e button-hole ends. Obviously, therelative position of the camoovcs 9 and 22 must be such that thei-tierent movements of the needle during one revolution of the disksucceed each other.

Fig. 3 shows the position of the parts during the travel of the needlefrom the one s'ide of the buttonhole to the other.

The disk 6 is operated from the oscillating shaft 36 (Fi 's. 2, 3, 4, 5and 10), and the mechanism ibr turning the said d k con-. sists, in theembodiment illustrated, of a plate 37 (Fig. 7) having the shape of acurved pawl, said plate having two pegs or knobs 38 engaging the flangeor'rim 39 of a disk formed 13; an extension of the hub 40 of the disk 6.

c plate 37 is connected to a rod 4 1, and the latter is connected to anarm 42 (Figs. 4 and 5) secured to the shaft 36. The connection betweenthe rod 41 and the arm 42 consists in the forked end. of the rod 41loosely engaging a cross-pin inserted through the split end of the arm42 so that the arm 42 operates the plate 37 only'when-pushing the rod 41111 the irection of the arrow, Fig. 7. In order to pull the plate backagain, I employ a coiled spring 43 attached to the plate 37 and to thebase plate 8, Fig. 4. The positions of the knobs 38 in relation to therim 39 are such that the knobs will firmly clamp the rim and cause thedisk to turn, when the rod 41 acts, in the direction of the arrow (Fig.7). on the end of the plate 37 connected thereto. When the arm 42 swingsbackward] y, the spring 43 turns the plate 37 with the knobs 38 in relation to the rim 39 so that the plate 37 can be pulled back by the spring43, the knobs 38 30mg caused, during this backward movement of the late37, to loosely glide along the sides 0r t 1e rim 39. In order to preventthe disk 6 from turnin backwardly with the plate 37 I provide a 'etentconsisting of a clamp 44 mounted between pins from the base late 8 andprovided with a recess having s anting sides 45 which are held againstthe sides of the rim 39 by a spring 46 in such a manner as to prevent te backward turning of the disk but to offer no resistance against theturning of the disk in the direction of the arrow.

The work holding clamp (Figs. 2, 3 and 10) is detachably fastened to thetable and held stationary with respect to the stitching meehanism. Inthe embodiment illustrated. it

consists of a plate 46 attached to a cross plate .95 47 resting on suports 48 secured to the table by nuts 49, the p ate 4.6 being, thereby,kept in such a position as to lie fiat on the top of the bottom plate ofthe frame of the ma chine. brackets 50 mounted on the topside of thecross plate 47 (Figs. 2 and 3) or directly on the plate 46 (Fig. 10) isa part 52 carrying the upper plate 53 of the work holding clamp. 54 is aspring pressing upon an extension of the plate 53 on the other side ofthe shaft 51v so as to press the toothed front end of the latter.against the cloth. In Figs. 2 and 3, the said extensioneonsists ofaseparate part 55 screwed onto the top of the plate 53. order to raisethe plate 53, when thecloth is to be inserted, or removed, 1 provide ancecentric cam 56 mounted on a shaft 57 journaled in bearings 58 on theplate 46. operating the cam 56 the shaftz57 is provided with a handle59.

The device for cutting the button hole, after the stitching has beenperformed, may consist of a cutter 60 mounted at the end of a rod 61.said rod is, at its other end, j ournaled around a shaft 62 mounted inarms 63 on a shaft 64 journaled in brackets 65 on the cross plate 47. iFor enabling the shaft 64t0 be turned it is provided with a handle 66.For guidin the cutter 60 during the cutting operatic provide, on theholding plate 53', a cam ada ted to engage a cam 68 on the knife" lioler 61,..the' latter cam 68 being adjustable for the purpose of enablingthe length of the Carried by a shaft 51 journaled in 'For' In theembodiment illustrated the mechanism, suitably consisting of a hook 79,.Figs. H and 9, engagn'tg the driving cord.

Said hook is shown secured toashaft 71 journaled in a bracket 72attached to the frame 1 of the machine. The shaft 71 has a crank 73, towhich is connected a vertical 'post 74 passing down through an a e;rtnreinthe bot tom plate of the frame 1. The said post 74- is provided withaprojection 75 engaging a plate'io during the stitel'iing operation, whenthe cord is running on. a fixed pulley 77, the

said projection 75 being held in engagement with the plate 76 by aspring 78. A coiled spring 79 is inserted on the said post 74, saidspring bearing against thebottom plate of the frame of the machineand'agalnst the head of the post so as to exert an upward pressure onthe post and raise the atter, when it is thrown out of engagement withthe plate 76, thereby turning the-shaft 71 and the hook 79 so as toshift the driving cord from the fixed pulley 77 onto the loose pulley(the )osition of the parts as shown in -7 and 8). In order'to effect theautomatic disengagement of the post and the plate 76 I provide an arm89, the free end of which ongages the lower extremity of the post 74,said arm 89, Figs. 2, 3, 41 5. and 8, being attached to a sleeve or" hub81 mounted on a pivot 82 fastened to the base late 8. the said hub-81.is anot 'er' arm 83 adapted to be engaged-by a knob 84 onthecircumference of the cam-grooved disk 6. In the .embodimentillustrated, the arms 89 and 83 both form parts of a single, strong wireattached to the hub 81. The arm 83 is held by a s iring 85 against thecircumference of the dis 6. When the stitching of the buttonhole isfinished, the knob 84 engages thear'm 83 and turns the arms 83 and 89,the latter throwing the post 74 out of engagement with the plate 76. Thepost is then raised, thereby turning the shaft 71 and the hook 70, whichlatter moves tha cord onto the loose pulleyf i t For the purpose ofmaintaining the engagement of the post 74 with the plate 76, when it isdesired to perform a double stitching around the. button h le, I providethe said shaft 71 with an exte, sion, or handle 86, so as to be able topress down the post during the turning of the arm 80, whereby theengagement is continued until the next disengaging operation of the saidarm.

The rocking'shaft 36 is driven from a rotary shaft 90 (Fig. 19)journaled centrally in the overhanging upper part of the stitching frame1 and carrying the usual hand-wheel ink 95 can be raised or lowered.

Attached to 1 head of the frame.

about its pivot pin 195.

91 and the pulley 77 for transmitting motion from the main shaft of themachine to the said rotary shaft 99. The connection between the rotaryshaft 99 and the rocking shaft 36 may be of any kind suitable for thepurpose. In the embodiment illustrated in. Fig. 19 the shaft 99 has acam 92 attached thereto, said cam being engaged by the up per, forkedend of a lever 93 (see also Figs. 12 and 13) pivotally connected, at itslower end, to the end of a crank-arm secured to the rocking shaft.- (inFig. '19 only the hub 94 of the said crank-arm is visible). The lever 93is pivotally connected, at a point somewhat beneath the upper, forkedend thereof, to the free end of a link 95 pivoted to the end of one armof an angle-lever 96 journaled in the frame. The otherarm of theangle-lever 96 has a threaded hole adapted to rceeivea screw 97 insertedthrough a longitudinal slot 98 in the frame and having ahead adapted totighten against the outer edge of the slot 98, when the screw 97 isscrewed into the hole at the end of the angle-lever 96. By this meansthe angle-lever 96 can be secured in different 'IOSiblOIlS so that thecenterofoseillation of the l When the center of oscillation of the link95 is raised,

.(Fig. 13) the lever 93 is caused to move up and down during the lateralvibration imparted to it by the rotary cam 92, the shaft 36 beingthereby 'caused to oscillate and move the frame. If, on the contrary,the center of oscillation of the link 95 is lowered, (Fig. 12) the lever93 is caused to swing lat-- orally without moving up and downsufficiently to cause the shaft 36 to oscillate. 'l.hus,'the mechanismimpm'ting to the frame its sliding motion can be thrown into or out ofaction by simply securing the angle-lever 96. in one or anotherposition.

The shuttle-mechanisni (not shown) is at tached to a rocking shaft 99driven from the rotaryshaft99byanysuitable means; in the embodimentillustrated, the shaft-99 is bent to a double crank 199 which is engagedby the head of a connecting rod- 101 pivotally connected, at its lowerend, to the end of an arm 102 projecting from the rocking shaft 99.Referring to Fi 11, the needle-bar 193 is movably mounted in a carrier1'94 pivoted, at itsupper end, about a pin 195 secured. to the The upanddownward] reciprocating motion of the needle-bar193 is imparted theretoby a crank-disk 196 secured to the fore end of the rotary shaft 99, andaconnecting rod 197 pivotally connected to the crank-disk and to theneedle-bar.

The lateral vibration of the needle-bar 193 is obtained by causing thecarrier 194 to swing To this end, the carrier 194 s'kept, by a spring198, in contact with the lower end of a lever 199 pivotally-mounted atthe outer side of the frame and carryi at its upper end, a roller .110

including-Ianeedle-bar 0f means.-adaptedyto--' I claim asnew actuated bya cam 111 securedt a rotary being kept in contact .with the cam 111 bythe-spring 108 acting upon thecarrier. 4

Screwed into the sidewall of the head of the stitching frame is'a screw114 the head of which can be made to bear on the lower arm of the lever109. If the screw 114 is suflEiciently tightened against the lever109,'the roller 110 is brought out of reach of the cam 111 so that nolateral vibration of the carrier 104 and needle-bar 103 will take place.By tightening the screw 114 securing the, lever 96 in a position inwhich the center of oscillation of the link 95 is the lowest possible,and removing the work-holding clamp, the machine ma thus, be used forplain stitching.

If desire the position of the frame 1 on the table can be secured by"means of two threaded bolts 87 inserted through slots 88 in the bottomplane of the frame and in' the table, said slots being long and wideenough to allow for the movements of the frame durin thestitchinofbuttonholes. v

v aying now escribed my invention what desire to secure by Letters 1.-In a Sewing machine, the comma.

arrymg the. stitching mechanism along the. outline of a buttonl-hole,means adapted 'to impart to the needle-bar's. lateral vibration, meansfor throwing the frame-op erating means into, or out of operation, and

:means for throwing the needleebar-vibrating -move along the outline ofa, button-hole, a

mechanism adapted to impart to the 'needlebar 1 a lateral vibrationadapted for side stitchin a stationary workolding clamp detacha lysecured to the table, means for throwing the fram e-operating mechanisminto or out of o eration, and means for throwing the needlear-v'ibratingmechanism into or out of operation, substantially as and for the purposeset forth; A

- 3. In a sewin machine, the combination of a table, a s'titc 'ng frameslidably mounted on the said table, a needle-bar carried by the saidframe, a mechanism adapted to actuate the said frame bodily1 so as toimpart thereto a motion causing t e needle-bar to move along the outline.of a button-hole, a mechanism adapted to impart to the needle-bar alateral vibration ada ted for side stitchin stationary work-hol ingclamp detachai secured to the table, means for throwing theframe-operating mechanisminto or out of operation, and meansfor'throwing the need dbahvibrating'mechanism into or out ofoperatiemsubstantially as and for the. purposeiset forth.

v testimony whereof-I have signed my actuate saidjframe b0 ily so asto.impart to it mass to cause the needle bar to move Witnesses OSCAR DE'Fnon,

CAR W. AsP.

ARL JoHAN' PALSSON

